ASTROSAT CZTI

Data Quality Report

Orbit 42852

Creation date: 2024-06-27T22:44:59.811676
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_138T01_9000005828_42852cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42852cztM0_level2_quad_clean.evt
Size (bytes)294,693,12082,707,840
Size281.0 MB 78.9 MB
Events in quadrant A2,698,925553,012
Events in quadrant B2,509,152568,393
Events in quadrant C2,508,787554,316
Events in quadrant D2,816,457491,176

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090836
B01076418
C01036528
D01182157

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4807260.540878%
B4820801.659751%
C4813370.768751%
D48051533.184183%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6984 4821 11 11 0.16% 0.23%
B 6984 4829 55 55 0.79% 1.14%
C 6984 4826 38 38 0.54% 0.79%
D 6983 4820 157 157 2.25% 3.26%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 528153 4831.78 530 520 109.2
A 12 189 49194 445.73 530 520 109.2
A 15 237 36160 326.37 530 520 109.2
B 4 171 232282 2240.14 531 516 103.5
B 5 255 130307 1254.5 531 516 103.5
B 0 245 26686 252.95 531 516 103.5
C 15 214 196807 1593.46 524 529 123.2
C 14 254 171953 1391.69 524 529 123.2
C 0 239 47768 383.5 524 529 123.2
D 2 249 391354 3158.8 507 493 123.7
D 1 52 159543 1285.38 507 493 123.7
D 10 118 131985 1062.67 507 493 123.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter